.sep-calculator {
    max-width: 640px;
    margin: 1.5em 0;
    padding: 1.5em;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    background: #fafafa;
}

.sep-title {
    margin-top: 0;
}

.sep-short-desc {
    color: #555;
    margin-top: -0.5em;
}

.sep-field {
    margin-bottom: 1em;
}

.sep-field label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.3em;
}

.sep-unit {
    font-weight: 400;
    color: #777;
}

.sep-input {
    width: 100%;
    max-width: 260px;
    padding: 0.5em 0.7em;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1em;
}

.sep-input-error {
    border-color: #d63638;
}

.sep-help {
    font-size: 0.85em;
    color: #777;
    margin: 0.3em 0 0;
}

.sep-actions {
    display: flex;
    gap: 0.75em;
    margin-top: 1em;
}

.sep-calculate-btn,
.sep-reset-btn {
    padding: 0.6em 1.4em;
    border-radius: 6px;
    border: none;
    font-weight: 600;
    cursor: pointer;
}

.sep-calculate-btn {
    background: #1d4ed8;
    color: #fff;
}

.sep-reset-btn {
    background: #e5e7eb;
    color: #111;
}

.sep-results {
    margin-top: 1.5em;
}

.sep-results-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sep-results-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.5em 0;
    border-bottom: 1px dashed #ddd;
}

.sep-result-label {
    color: #444;
}

.sep-result-value {
    font-weight: 700;
}

.sep-error {
    color: #d63638;
}

.sep-loading {
    color: #777;
}

.sep-result-note {
    font-size: 0.85em;
    color: #777;
}

.sep-description {
    margin-top: 2em;
    line-height: 1.6;
}

.sep-faqs {
    margin-top: 2em;
}

.sep-faq-item {
    margin-bottom: 1em;
}

.sep-faq-q {
    margin: 0 0 0.3em;
    font-size: 1em;
}

.sep-faq-a {
    margin: 0;
    color: #444;
}